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tapwater
England and Wales average 9.0

Tap water in SY18, PowysSafe to drink.Soft.

Supplied by Dŵr Cymru Welsh Water. 143 samples, 19 substances, latest on 2 December 2024. Everything is inside the legal limit, and nothing comes close to it.

See the filter we recommendSee everything that was tested

9.3 / 10

The tank is as full as the score. The specks are the minerals that make water hard.

What to do about it

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Households concerned about PFAS and heavy metals

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High-volume under-sink filtration without RO complexity

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Basic chlorine and taste improvement on a budget

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What's in a glass of SY18 water

Every bubble is a substance the lab measured. The higher it floats, the closer it came to its legal limit, the dashed line at the top.

Trihalomethanes came closest to a limit, at 38% of it. 14 of 16 substances used under a quarter of theirs.

0%25%50%75%limitLegal limitChromium: 0.000092 mg/L, <1% of the 0.05 mg/L limitChromium<1%Cadmium: 0.000025 mg/L, <1% of the 0.005 mg/L limitCadmium<1%Antimony: 0.000028 mg/L, <1% of the 0.005 mg/L limitAntimony<1%Selenium: 0.00023 mg/L, <1% of the 0.04 mg/L limitSelenium<1%Arsenic: 0.00012 mg/L, 1% of the 0.01 mg/L limitArsenic1%Lead: 0.00016 mg/L, 2% of the 0.01 mg/L limitLead2%Manganese: 0.0012 mg/L, 2% of the 0.05 mg/L limitManganese2%Aluminium: 0.005 mg/L, 3% of the 0.2 mg/L limitAluminium3%Copper: 0.058 mg/L, 3% of the 2 mg/L limitCopper3%Nitrate: 2.61 mg/L, 5% of the 50 mg/L limitNitrate5%Turbidity: 0.27 NTU, 7% of the 4 NTU limitTurbidity7%Nitrite: 0.056 mg/L, 11% of the 0.5 mg/L limitNitrite11%Iron: 0.041 mg/L, 21% of the 0.2 mg/L limitIron21%Colour: 4.6 mg/L Pt/Co, 23% of the 20 mg/L Pt/Co limitColour23%Nickel: 0.0061 mg/L, 31% of the 0.02 mg/L limitNickel31%Trihalomethanes: 0.038 mg/L, 38% of the 0.1 mg/L limitTrihalomethanes38%
  1. Trihalomethanes38%
  2. Nickel31%
  3. Colour23%
  4. Iron21%
  5. Nitrite11%
  6. Turbidity7%
  7. Nitrate5%
  8. Copper3%
  9. Aluminium3%
  10. Manganese2%
  11. Lead2%
  12. Arsenic1%
  13. Selenium<1%
  14. Antimony<1%
  15. Cadmium<1%
  16. Chromium<1%
  • E. coli none found
  • Conductivity 120 µS/cm
  • Coliform Bacteria none found
All 19 results as a table
SubstanceResultLegal limitShare of limit
E. coli0 count/100mlMust be zeroNone found
Conductivity120 µS/cmNo legal limit–
Iron0.041 mg/L0.2 mg/L
21%
Coliform Bacteria0 count/100mlMust be zeroNone found
Manganese0.0012 mg/L0.05 mg/L
2%
Aluminium0.005 mg/L0.2 mg/L
3%
Colour4.6 mg/L Pt/Co20 mg/L Pt/Co
23%
Turbidity0.27 NTU4 NTU
7%
Trihalomethanes0.038 mg/L0.1 mg/L
38%
Antimony0.000028 mg/L0.005 mg/L
<1%
Lead0.00016 mg/L0.01 mg/L
2%
Selenium0.00023 mg/L0.04 mg/L
<1%
Copper0.058 mg/L2 mg/L
3%
Cadmium0.000025 mg/L0.005 mg/L
<1%
Nickel0.0061 mg/L0.02 mg/L
31%
Chromium0.000092 mg/L0.05 mg/L
<1%
Arsenic0.00012 mg/L0.01 mg/L
1%
Nitrite0.056 mg/L0.5 mg/L
11%
Nitrate2.61 mg/L50 mg/L
5%

16mg of limescale minerals in every litre, typical for the SY area. SY18 has no reading of its own.

Soft water. Kind to kettles, boilers and skin

You will not need a softener here, and you will use less soap and detergent than most of England.

Soft400 mg/L

SY18 in short

Tap water in SY18 (Powys) is supplied by Dŵr Cymru Welsh Water in the Powys Central zone and scores 9.3 out of 10, against an England and Wales average of 9.0. None of the 19 tested substances came close to a limit. The latest sample is from 2 December 2024.

  • 14th cleanest of 17 areas tested in Powys3 areas in Powys scored lower. The best is LD3 on 9.7.
  • Soft water at 16 mg/LLimescale is not a problem across the SY postcode area, so skip softeners and scale filters entirely. How hardness is measured
  • Nothing tested came within 40% of its legal limitThe highest was Trihalomethanes at 38% of the 0.1 mg/L maximum. See every reading

Next door

SY209.6 out of 10 · 16 mg/LSY179.5 out of 10 · 16 mg/LSY159.3 out of 10 · 16 mg/LSY219.5 out of 10 · 16 mg/LLD29.4 out of 10LD39.7 out of 10SY169.1 out of 10 · 16 mg/LLD49.4 out of 10LD59.4 out of 10LD69.4 out of 10

Questions about SY18 water

Is SY18 tap water safe to drink?

Based on the latest tests, SY18 (Powys) water scores 9.3/10, which is safe. 0 of 19 tested contaminants exceeded recommended levels. Water is supplied by Dŵr Cymru Welsh Water.

What contaminants are in SY18 water?

We tested 19 contaminants in SY18 water. None exceeded recommended safe levels.

Who supplies water in SY18?

SY18 (Powys) is supplied by Dŵr Cymru Welsh Water. You can view their full profile and compliance data on our supplier page.

Is SY18 water hard or soft?

No hardness reading has been published for SY18 itself. Across the SY postcode area the typical value is 16 mg/L CaCO3, which is classified as soft. Soft water is gentle on appliances and skin.

Should I use a water filter in SY18?

SY18 water scored 9.3/10 with no contaminants above recommended levels. A filter is optional but can improve taste, especially if you notice a chlorine flavour. See our filter recommendations for your area.

Are there PFAS forever chemicals in SY18 water?

No PFAS (forever chemicals) result is attached to the tap-water tests for SY18, and the Environment Agency has no PFAS detections in rivers or groundwater within 10 km of it. That reflects where sampling has happened as much as the water itself.

Keep reading

How to test your waterBest water filtersFilter shower headsWater testing kitsUK water rankingsWater hardness checkerWater hardness map

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Source: Dŵr Cymru Welsh Water test results, published through the Stream Water Data Portal; rivers and PFAS from the Environment Agency. Page updated . How we score · Where the data comes from